I've been working in an old-fashioned company that has a small IT department and zero experience with project management. I'm having trouble finding the right approach to present IT solutions, transform these solutions into projects and manage them in a way the stakeholders will understand.
The main trouble at the moment has been that every project I propose is not well-received, since it will cost money, time, resources and people will need to be trained in their own jobs (e.g. if I want to introduce a Help Desk solution to our spreadsheet-oriented Help Desk dept.) - and no one likes learning how to do their own job again.
What I'm trying to do presently: show the solution and why it would be good; estimate how long it would take to implement; how many resources the project would need; and how much it would cost (person/hour + software costs + etc). But I'm having trouble to exemplify how much we would "profit" in the long term. Remember, these are non-TI people, so arguing that (e.g.) it's more secure having databases than spreadsheets is not a strong argument, and I don't know how to make it appear strong, so I'm trying to talk in money.
Example: employee A does task X in 2 hours, which is very long, with an IT solution he would take fair less, but I can't precisely estimate he will take 30 minutes - if I could, it would be easier to present the long-term profit to the stakeholders in financial values. He could take 30 minutes, or 15, or 1 hour and 10 minutes - all would present benefits in the long-term, financially speaking, but I can't be precise on how much.
What would be the best way to approach this scenario? Introduce and initiate IT projects successfully, all while communicating the benefits from these in a way non-IT people can understand.